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- W2783791343 abstract "The electrochemical performance of an energy conversion and storage device like the supercapacitor mainly depends on the microstructure and morphology of the electrodes. In this paper, to improve the capacitance performance of the supercapacitor, the all-pseudocapacitive electrodes of lamella-like Bi 18 SeO 29 /BiSe as the negative electrode and flower-like Co 0.85 Se nanosheets as the positive electrode are synthesized by using a facile low-temperature one-step hydrothermal method. The microstructures and morphology of the electrode materials are carefully characterized, and the capacitance performances are also tested. The Bi 18 SeO 29 /BiSe and Co 0.85 Se have high specific capacitance (471.3 F g –1 and 255 F g –1 at 0.5 A g –1 ), high conductivity, outstanding cycling stability, as well as good rate capability. The assembled asymmetric supercapacitor completely based on the pseudocapacitive electrodes exhibits outstanding cycling stability (about 93% capacitance retention after 5000 cycles). Moreover, the devices exhibit high energy density of 24.2 Wh kg –1 at a power density of 871.2 W kg –1 in the voltage window of 0–1.6 V with 2 M KOH solution." @default.
- W2783791343 created "2018-01-26" @default.
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- W2783791343 date "2018-01-01" @default.
- W2783791343 modified "2023-10-14" @default.
- W2783791343 title "Nanostructure selenium compounds as pseudocapacitive electrodes for high-performance asymmetric supercapacitor" @default.
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- W2783791343 doi "https://doi.org/10.1098/rsos.171186" @default.
- W2783791343 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5792907" @default.
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- W2783791343 hasPublicationYear "2018" @default.
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